BZIPPY clay goods are one-of-a-kind stoneware / earthenware editions with variations in glazes depending on the firing process. Please note that glazes are unique and not exactly the same due to the firing process and handmade quality. Planters are indoor / outdoor safe in specific climates. Note for outdoor use: in colder climates we advise to bring them indoors in the winter. Custom glazes: at this time we cannot accommodate any glaze research or special colorways beyond our set glaze palette. We can only accommodate orders using our own glazes, and we cannot mix them.